WordPress/wp-content/themes/twentytwentyone/assets/js/polyfills.js

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/**
* File polyfills.js.
*
* Polyfills for IE11.
*/
/**
* Polyfill for Element.closest() because we need to support IE11.
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/Element/closest
*/
if ( ! Element.prototype.matches ) {
Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
}
if ( ! Element.prototype.closest ) {
Element.prototype.closest = function( s ) {
var el = this;
do {
if ( Element.prototype.matches.call( el, s ) ) {
return el;
}
el = el.parentElement || el.parentNode;
} while ( el !== null && el.nodeType === 1 );
return null;
};
}
/**
* Polyfill for NodeList.foreach() because we need to support IE11.
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach
*/
if ( window.NodeList && ! NodeList.prototype.forEach ) {
NodeList.prototype.forEach = function( callback, thisArg ) {
var i;
thisArg = thisArg || window;
for ( i = 0; i < this.length; i++ ) {
callback.call( thisArg, this[i], i, this );
}
};
}